JAAA(1)

NAME
jaaa - JACK and ALSA Audio Analyser

SYNOPSIS

jaaa -J [-name name ] [-s server]

jaaa -A [-name name ] [-d device] [-C device ] [-P device ] [-r rate] [-p period] [-n nfrags]

DESCRIPTION

jaaa is a graphical (X11) audio signal generator and spectrum analyser designed to make accurate measurements. For more information see /usr/doc/jaaa-0.9.2/README.

In JACK mode (-J), jaaa creates 8 input ports (for spectrum analysis) and 8 output ports (for signal generation), named jaaa:in_<N> and jaaa:out_<N> (where <N> ranges 1 to 8). By default, these aren't connected to anything; use e.g. qjackctl(1) or jack_connect(1) to connect to other JACK clients.

In ALSA mode, the inputs and outputs are connected directly to the ALSA device, meaning e.g. there will be 2 inputs and 2 outputs for a typical stereo audio card. If you get "Can't connect to ALSA", try a different device (use alsamixer(1) or aplay(1) to get a list of them).

OPTIONS

Either -J or -A is required.

-h  Show built-in help message.

-name name
    Set X11 client name (and JACK client name, with -J).

-J  Use JACK for audio. This option is available in JACK mode:

-s server
    Connect to a specific JACK server. Default is 'default' or $JACK_DEFAULT_SERVER environment variable.

-A  Use ALSA for audio. These options are available in ALSA mode:

-d device
    ALSA device for capture and playback. This option sets the playback and capture devices to the same device. For separate capture and playback, use the -C and -P options. Default: hw:0 unless -C or -P is used.

-C device
    ALSA device for capture. Default: not used.

-P device
    ALSA device for playback. Default: not used.

-r rate
    Sample frequency. Default: 48000.

-p period
    Period size. Default: 1024.

-n nfrags
    Number of fragments. Default: 2.

COPYRIGHT

See the file /usr/doc/jaaa-0.9.2/COPYING for license information.

AUTHORS

jaaa was written by Fons Adriaensen <fons@kokkinizita.net>.

This man page written for the SlackBuilds.org project by B. Watson, and is licensed under the WTFPL.

SEE ALSO

jackd(1), japa(1)

https://kokkinizita.linuxaudio.org/linuxaudio/